What is "jumaring"

Usage examples of "jumaring".

Getting her down means they have to hammer in new pitons, set up rappelling ropes for her, lower her with one of them jumaring down the fixed rope beside her, while occasionally hunkering down to avoid hard gusts of wind.

Getting her down means they have to hammer in new pitons, set up abseiling ropes for her, lower her with one of them jumaring down the fixed rope beside her, while occasionally hunkering down to avoid hard gusts of wind.

I clipped carabiners onto the line and harness, pulling the powered ascenders from the pack and attaching them without double-checking the connections, then began jumaring up the icy ropes.